 cj5716andJoost VandeVondele
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e551964ef6
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Negative extension on cutNodes based on depth
This patch was inspired by candirufish original attempt at negative extensions
here that failed yellow: https://tests.stockfishchess.org/tests/view/6486529065ffe077ca124f32
I tested some variations of the idea and tuned a depth condition for
a modified version of it here https://tests.stockfishchess.org/tests/view/648db80a91c58631ce31fe00
after noticing abnormal scaling (ie many passed STC but not LTC)
After some small tweaks I got the final version here
Passed STC:
LLR: 2.98 (-2.94,2.94) <0.00,2.00>
Total: 122208 W: 32776 L: 32350 D: 57082
Ptnml(0-2): 310, 13250, 33553, 13686, 305
https://tests.stockfishchess.org/tests/view/64997934dc7002ce609d01e3
Passed LTC:
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 145092 W: 39617 L: 39115 D: 66360
Ptnml(0-2): 54, 13691, 44552, 14197, 52
https://tests.stockfishchess.org/tests/view/649a1c5ddc7002ce609d0bff
closes https://github.com/official-stockfish/Stockfish/pull/4644
Bench: 2637784
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2023-07-01 13:06:49 +02:00 |
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cj5716andJoost VandeVondele
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0187546275
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Small cleanup
This non-functional change keeps formatting consistent.
closes https://github.com/official-stockfish/Stockfish/pull/4623
Bench 2370027
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2023-06-16 19:14:58 +02:00 |
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cj5716andStéphane Nicolet
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a9a6915e08
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Simplify multiplier for improvement
This simplifies a `* 99 / 1300` term into just `/ 13`.
Passed non-regression STC:
LLR: 2.92 (-2.94,2.94) <-1.75,0.25>
Total: 58816 W: 15727 L: 15540 D: 27549
Ptnml(0-2): 149, 6370, 16203, 6517, 169
https://tests.stockfishchess.org/tests/view/647d25e4726f6b400e408165
Passed non-regression LTC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 154386 W: 41749 L: 41669 D: 70968
Ptnml(0-2): 94, 14992, 46956, 15042, 109
https://tests.stockfishchess.org/tests/view/647d9b3c726f6b400e408b2a
closes https://github.com/official-stockfish/Stockfish/pull/4608
Bench: 2511327
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2023-06-11 15:05:54 +02:00 |
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cj5716andJoost VandeVondele
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c701745cf2
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Remove ss->ttHit condition where ttValue != VALUE_NONE
Simplification is done at 3 separate places in the code.
Thanks to peregrineshahin for helping me find 2 of such places.
(See original PR #4584)
Passed non-regression test
LLR: 2.93 (-2.94,2.94) <-1.75,0.25>
Total: 120256 W: 32204 L: 32085 D: 55967
Ptnml(0-2): 292, 12473, 34483, 12584, 296
https://tests.stockfishchess.org/tests/view/646f045968661bfd984325e3
closes https://github.com/official-stockfish/Stockfish/pull/4587
No functional change
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2023-05-25 20:49:11 +02:00 |
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